baber/WOPTO huggingface dataset:
Patent CA-1183477-A (CA)
Inventor: TAUBMAN MARTIN A
IPC: C12R1/46
Filed: 1983-01-28
Granted: 1985-03-05
Abstract: METHOD FOR THE PREPARATION OF GLUCOSYLTRANSFERASE     ABSTRACT OF THE DISCLOSURE           A method of preparing a purified glucosyltransferase (GTF) for use in immunization against dental caries, which method comprises:  culturing a Streptococcus mutans in a medium contain-ing glucose and dialyzable nutrients to form a mixture of culture cells and supernatant; recovering the supernatant by the removal of the culture cells; admixing the recovered supernatant with a water-insoluble, polymerized polysaccharide as solid particulate material for a period of time, to provide a GTF, solid particulate complex; recovering the GTF complex in solid particulate form by filtration; washing the solid GTF complex to remove unbound GTF and medium component; removing the GTF from the solid particulate material by a denaturing solvent; recovering the water-insoluble particulate material for reuse in the method; and recovering the GTF from the water-insoluble polysaccharide and purifying the recovered GTF.
Patent CA-1198650-A (CA)
Inventor: PALMGREN KARL S
IPC: F17D5/04
Filed: 1983-02-23
Granted: 1985-12-31
Abstract: CANADIAN PATENT APPLICATION                            OF                    KARL SIEVERT PALMGREN                           FOR     A CONDUIT-BREAK VALVE FOR A PRESSURE CONDUIT OR HOSE      WITH A SURROUNDING PROTECTIVE CONDUIT OR HOSE     Abstract of the Disclosure:     A conduit-break valve for a double hose or con-duit is designed to operate under a higher pressure between the hoses or conduits than that prevailing in the inner hose or conduit and than that of the ambient atmosphere. The valve has a valve member which is urged by a spring towards its valve seat. A diaphragm or pis-ton device normally maintains the valve member in open position by the action of the pressure in a pressure chamber which is connected to the space between the hoses. At a break of the inner and/or the outer one of the hoses or conduits the pressure in the pressure chamber is reduced and the valve is closed by the action of the spring.
Patent CA-1206430-A (CA)
Inventor: BROCHMAN WILFRED R
IPC: B65D17/50
Filed: 1983-04-05
Granted: 1986-06-24
Abstract: Tamper-Proof Closure for Container Abstract A tape closure comprising a two-tape closure system for a pour opening in a container wherein the pull tab for the closure is secured to the container end by a rupturable nonresealable holddown.
Patent CA-1210593-A (CA)
Title: Process for the sulfatization of non-ferrous metal  sulfides
Inventor: NORRGRAN DANIEL A
IPC: C22B1/06
Filed: 1983-04-05
Granted: 1986-09-02
Abstract: PROCESS FOR THE SULFATIZATION OF    NON-FERROUS METAL SULFIDES  Abstract of the Invention In the extraction of certain non-ferrous metals from their sulfide ores by a process where these sulfides are converted to water soluble sulfates by roasting, alkali metal   carbonate   or  bicarbonate,   especially   sodium carbonate, is added to the roaster feed to promote the sulfatization reaction.   Ores containing copper, nickel, cobalt  or  zinc  sulfides  are  concentrated  by  froth flotation,  the  concentrate  mixed  with  carbonate  or bicarbonate and roasted.   the roasted product is mixed with water to separate these metals as soluble sulfates from iron compounds and other solid residue. The sulfate solution is filtered from the solids and the non ferrous metals recovered by precipitation or electrolysis.
Patent CA-1169350-A (CA)
Inventor: KITCHEN JOHN A
IPC: F23C15/00
Filed: 1983-04-21
Granted: 1984-06-19
Abstract: ROGERS, BERESKIN & PARR                            C A N A D A                 Title:  PULSE COMBUSTION APPARATUS              Inventor:  JOHN A. KITCHEN                  ABSTRACT OF THE DISCLOSURE             The disclosure relates to pulse combustion appara-tus generally and to air furnaces of the pulse combustion type.  The invention provides a control system for the pulse combustion apparatus in which the air velocity in a combus-tion air intake is sensed and used for controlling the apparatus.  The system responds to a first air intake velocity as indicating satisfactory operation of a starting blower and activates the gas supply and ignition means, and to a second air intake velocity as indicating establishment of combustion; the circuit will then de-activate the ignition means and blower.  The system also includes a timer which will shut off the gas supply if the second velocity is not achieved after a predetermined time interval from initiation of a starting attempt.
Patent CA-1216328-A (CA)
Inventor: KAMMILLER NEIL A
IPC: H02M1/15
Filed: 1983-05-02
Granted: 1987-01-06
Abstract: PEAK CHARGING CIRCUIT PROVIDING FOR IMPROVED    LOOP GAIN AND COMMON MODE NOISE REJECTION                            ABSTRACT Circuitry for use in the current control loop of switched mode power supplies which in a first embodiment increases the a-c gain of that loop.  In a second embodiment the circuit rejects common mode noise in the loop.  In this embodiment the secondary of the transformer used to sense current in the power switching means of the circuit is made up of two windings in series which are wound bifilar with respect to each other.  The d-c signal representative of the current in the switching means is taken between one end of the secondary and the center point of the series connection.          In a third embodiment the circuit provides a relatively accurate representation of low current in the power switching device.  In this embodiment the circuit uses at least one compensation means in series with resistive means connected across the secondary of the transformer to compensate for the turn-on voltage of the at least one diode used in the peak charging portion of the circuit.
Patent CA-1212165-A (CA)
Inventor: BOLES SOL
IPC: G01S13/88
Filed: 1983-05-09
Granted: 1986-09-30
Abstract: RANGE/AZIMUTH ANGLE SHIP IMAGING FOR ORDNANCE CONTROL                         ABSTRACT           Distortions inherent in the formation of a range/ doppler image by an airborne Synthetic Aperture Radar (SAR) of a ship under the influence of roll, pitch, and yaw motions character-istic of sea state conditions, are removed by the formation of a scaled range/azimuth angle image generated with the use of an interferometer antenna in conjunction with the SAR.  A least squares linear regression solution to doppler processed inter-ferometric azimuth angle data derived from ship radar reflections permits the determination of aircraft to ship relative rotational motion essential to the development of such an improved high resolution radar image, so that continuous automatic tracking of a cursor imbedded in a single designated resolution cell of the ship's displayed image essential to carrying out precision stand-off command weapon guidance to that selected ship target cell, can be accomplished.
Patent CA-1270843-A (CA)
Inventor: JOHNSON EDWARD S
IPC: C07D493/04
Filed: 1983-05-16
Granted: 1990-06-26
Abstract: ABSTRACT     A preparation for pharmaceutical use, especially in the treatment of migraine, arthritis and bronchial complaints contains a sesquiterpene lactone and may be an extract recovered from the plant Tanacetum parthenium by extraction using a non-polar solvent.  Alternatively the preparation may be a sesquiterpene lactone per se or formulation containing it.
Patent CA-1195526-A (CA)
Title: Fluid pressure transducer
Inventor: TWOMEY JAMES R
IPC: G01L7/08
Filed: 1983-05-25
Granted: 1985-10-22
Abstract: ABSTRACT          A fluid pressure transducer of the null balance type in which a fluid whose pressure is being sensed acts against one face of a diaphragm and a balancing control fluid acts against the opposite face.  Control fluid pressure is uniformly distributed against the control face of the diaphragm by a porous element, preferably made of a sintered material.  Movement or displacement of the diaphragm opens a sensing element and may be controlled by use of a similar pressure distributing porous element placed on the sensing side.  The volume defined between the two porous elements limits maximum diaphragm travel and displacement.          Transducers made according to the invention have high sensitivity.  The transducers are particularly well adapted for measurement of pore pressure in earth fills or natural geological environments.
Patent CA-1202886-A (CA)
Inventor: TOMLIN JERRY B
IPC: E21B33/038
Filed: 1983-06-01
Granted: 1986-04-08
Abstract: SEAL FOR AN UNDERWATER CONNECTOR                           Abstract A seal for use in an underwater connector having first and second mating members each of which has a coacting mating surface with a plurality of fluid passageways for mating with the passageways of the other member.  The seal is a resilient tubular member having threads on a portion of its outer diameter for connection to a passageway on one of the members.  The seal includes a fluid sealing surface on its outer end for mating with the other member and the seal includes a fluid sealing surface on its inner end for sealing with the one member.  The sealing point of the sealing surface on the outer end has a diameter at least as great as the diameter of the sealing point of the sealing surface on the inner end.  The sealing surface on the inner end is formed by an O-ring seal in a groove in the annular resilient seal.  The sealing surface on the outer end includes a ridge.
Patent CA-1203234-A (CA)
Title: PROCEDE DE PREPARATION DE NOUVEAUX DERIVES DICHLORES  DE LA SERIE 16.alpha.-METHYL PREGNANE
Inventor: TEUTSCH JEAN G
IPC: C07J51/00
Filed: 1983-10-04
Granted: 1986-04-15
Abstract: La présente demande a pour objet un procédé pour la préparation des produits de formule (I): . < IMG > dans laquelle R = triméthylsilylphényl, cyclododécyloxy, dicyclopentylméthoxy ou cyclohexylméthoxy. Les produits de formule (I) peuvent être utilises comme médicaments, notamment anti inflammatoires "in loco".
Patent CA-1204493-A (CA)
Inventor: WINBOW GRAHAM A
IPC: G01V1/44
Filed: 1983-10-14
Granted: 1986-05-13
Abstract: ABSTRACT           The multipole shear wave logging device of this invention includes a logging sonde, means for generating a 2n-pole shear wave in an earth formation surrounding a borehole containing liquid where n is an integer greater than 2, and means for detecting in the liquid the refraction of the 2n-pole shear wave.  In the preferred embodiment the generating means comprises six similar sectors of a hollow piezoelectric cylinder.  The six sectors are polarized radially and are so connected to the sonde that they are in the form of a split cylinder coaxial with the sonde axis.  Electrical pulses of similar wave forms are applied across the inner and outer cylindrical surfaces of each sector.  The electrical pulses are of such polarities that adjacent sectors vibrate radially in substantially opposite phase.  Circumferentially polarized sectors may also be used in the place of radially polarized sectors. The vibrations of the six sectors will generate compressional waves in the liquid which will interfere to produce an octopole shear wave in the formation.  The compressional wave in the liquid caused by refraction of such octopole shear wave is detected by the detecting means.  The detect-ing means comprises two detectors in the liquid spaced apart longitudinally from each other and from the generating means.  The shear wave velocity of the formation is determined from the time interval between detections of the refraction of the octopole shear wave by the two detectors.
Patent CA-1206899-A (CA)
Inventor: FREYTAG J WILLIAM
IPC: G01N33/544
Filed: 1983-10-18
Granted: 1986-07-02
Abstract: Title SPECIFIC BINDING ASSAYS UTILIZING   ANALYTE-CYTOLYSIN CONJUGATES               Abstract of the Disclosure A novel analyte-cytolysin conjugate and its use in a lipid vesicle mediated measurement process is described for a wide variety of analytes present at very low concentration.  The method involves forming a reaction system consisting of analyte, analyte specific binding agent, analyte-cytolysin conjugate, and vesicles containing detectable marker material in such proportions that uncombined conjugate alters the permeability of the vesicles resulting in the release and quantitative detection of marker material which can be correlated with the amount of analyte initially present.
Patent CA-1204255-A (CA)
Inventor: HARGREAVES BRIAN
IPC: F16J15/00
Filed: 1983-10-31
Granted: 1986-05-13
Abstract: ABSTRACT            Non-asbestos flexible sheet material suitable for use in gaskets for the exhaust manifold of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:   ball clay                      25-44 non-fibrous layer silicate     25-40% graphite                       10-30% cellulose fibres     3-15% synthetic rubber                1-10% starch 1-5%
Patent CA-1204507-A (CA)
Inventor: APPLEQUIST ROY A
IPC: G11B5/55
Filed: 1983-11-03
Granted: 1986-05-13
Abstract: METHOD AND APPARATUS FOR STORING AND RETRIEVING INFORMATION       Abstract of the Disclosure In a device for retrieving and recording (read/write) information on at least one rigid disk, a stepping motor servo system operated in an open-loop manner is provided to rapidly and accurately position read/write heads relative to the disk.          A fixed guide shaft adjacent to and transverse to the motor shaft carries a carriage slidably thereon, preferably on oil impregnated bearings, the carriage member including a gear rack and the stepping motor having a pinion gear thereon interfacing with the gear rack. A preload bearing is urged against the carriage at a position between the guide shaft and the pinion gear such that the carriage is rotated around the guide shaft into engagement with the pinion gear at the rack portion there-of.  The stepping motor is preferably fixed to the device chassis at a position and location spaced from the pinion gear a distance corresponding to the distance of a preferred spring steel head support arm utilized to carry the read/write head, to compensate for thermal expansion differences between the chassis material, and the spring steel head support arm.
Patent CA-1208645-A (CA)
Inventor: FABRE JEAN-LOUIS
IPC: C07D207/24
Filed: 1983-12-06
Granted: 1986-07-29
Abstract: Pyrrolidine derivatives of the formula:   <IMAGE>   wherein X represents an oxygen or sulphur atom, R represents a hydrogen atom or an alkyl radical, Ro represents a hydrogen atom, an alkyl radical or a phenyl radical optionally substituted by a halogen atom or by an alkyl, alkoxy, alkylthio or nitro radical, A represents a nitrogen atom or a radical =CH-, the symbol Y represents a hydrogen or halogen atom or an alkyl, alkoxy, alkylthio, alkylcarbonyl, nitro, amino, alkylcarbonylamino, alkylamino, dialkylamino, alkylsulphinyl, alkylsulphonyl, alkoxycarbonyl, cyano, trifluoromethyl, hydroxy, mercapto, alkylcarbonyloxy or alkylcarbonylthio radical, n represents zero or 1, and p represents 1, 2 or 3, it being understood that the alkyl and alkoxy radicals, and alkyl and alkoxy moieties of any of the aforementioned groups, contain from 1 to 4 carbon atoms are new therapeutically useful compounds, more particularly useful as antidepressants.
Patent CA-1235281-A (CA)
Inventor: BLANC SERGE
IPC: A61L2/08
Filed: 1984-01-31
Granted: 1988-04-19
Abstract: 1. Process for the sterilization by irradiation, with a sterilizing dose of high-energy radiation such as gamma rays, of polyolefinic compositions containing at least one phenolic antioxidant, characterized in that the polyolefinic composition contains 2,2'-methylene-bis(4-methyl-6-tert-butylphenol) terephthalate.
Patent CA-1217903-A (CA)
Inventor: HERR ALFONS K
IPC: C09K21/00
Filed: 1984-02-17
Granted: 1987-02-17
Abstract: FLAME RETARDANT PAPER AND PROCESS FOR MAKING IT       ABSTRACT OF THE DISCLOSURE      The disclosure relates to flame retardant paper con-taining cellulose fibers which have been treated with an ammonium polyphosphate as a flame retardant agent. The paper contains more especially, as the flame retardant agent, a product made from a free-flowing ammonium poly-phosphate and a hardened, water-insoluble artificial resin encasing the individual ammonium polyphosphate particles.
Patent CA-1212727-A (CA)
Inventor: AMATA MARIO A
IPC: B23K35/362
Filed: 1984-05-11
Granted: 1986-10-14
Abstract: TUBULAR WELDING ELECTRODE Abstract of the Invention A formulation for the flux in a cored-type electric arc welding electrode which produces high impact value welds while welding vertically up or overhead and at greater melt-off rates than heretofore.  The major flux ingredients are lithium oxide, iron oxide, silicon dioxide, lithium carbonate, magnesium and aluminum metal powders, all in a carefully balanced formula to give excellent operator appeal and excellent slag removal.
Patent CA-1237444-A (CA)
Inventor: VAN LEEUWEN PETRUS W N M
IPC: C07C27/00
Filed: 1984-07-04
Granted: 1988-05-31
Abstract: A B S T R A C T          PROCESS FOR THE PREPARATION OF ACETIC ACID AND/OR METHYL ACETATE    A process for the preparation of acetic acid and/or methyl acetate by reaction of methanol with carbon monoxide in the presence of a catalyst system comprising a palladium compound which is soluble in the reaction mixture and a compound RZ, wherein R re-presents hydrogen or an alkyl, cycloalkyl or aralkyl group, and Z is chlorine, bromine or iodine, characterized in that in addition there are present in the catalyst system an ionic bromine or iodine compound other than HBr or HI and a sulphone or sulphoxide.
Patent CA-1222877-A (CA)
Inventor: MCMILLAN STEPHEN L
IPC: D06F39/10
Filed: 1984-08-03
Granted: 1987-06-16
Abstract: SELF-CLEANING UNDER BASKET LINT FILTER          FOR AUTOMATIC WASHER                 ABSTRACT OF THE DISCLOSURE          A filter attached for rotation with a washing machine basket includes a filtering surface which is in a plan substantially perpendicular to the axis of the basket for filtering laundry liquid during a washing operation and for reverse flushing of the filtering surface during a liquid extraction operation.
Patent CA-1217079-A (CA)
Inventor: SPEIGEL KENNETH
IPC: C08L29/04
Filed: 1984-08-23
Granted: 1987-01-27
Abstract: PHA.60047                   17              6.3.84 ABSTRACT: A negative-working photoresist composition for use on a polymethyl methacrylate surface.         A method is shown in which a black, light-absorbing matrix is formed on the viewing surface of a rear-projection polymethyl methacrylate TV viewing screen in which there is use of a negative working photoresist composition comprising an aqueous solution of polyvinyl alcohol, a water-soluble dichromate and acetone as essentially the sole wetting agent.
Patent CA-1226404-A (CA)
Inventor: WALTHER DONALD R
IPC: A47K3/00
Filed: 1984-09-07
Granted: 1987-09-08
Abstract: Abstract of the Disclosure A fiberglass, above-ground swimming pool including two semi-circular and sections that are bolted together along open ends dispose along a diameter of each end section.          Each end section has a semi-cylindrical wall portion and a semi-circular floor portion to provide the assembled pool with the form of a circular basin.  One or more U-shaped insert sections, each comprised of two L-shaped modules that are bolted together at the ends of the base of the L, can be bolted between the end sections to form a pool of substan-tially any length.
Patent CA-1251189-A (CA)
Inventor: FURRER HANSJORG
IPC: C08K3/00
Filed: 1984-12-20
Granted: 1989-03-14
Abstract: ABSTRACT OF THE DISCLOSURE          A process for controlling the flow of a suspension, especially a high temperature lubricant in the form of graphite and polymer suspended in water and having a viscosity of 1,000 to 20,000 cP at a temperature of up to 250 bars and a current velocity of up to 120 m/sec, uses a valve to connect and disconnect the flow.  Closing and opening times of the valve of 2 to 20 milliseconds are maintained.  The valve preferably is a piston valve.
Patent CA-1233979-A (CA)
Inventor: KREUTZ FERDINAND
IPC: E21B47/08
Filed: 1985-01-11
Granted: 1988-03-15
Abstract: ABSTRACT OF THE DISCLOSURE           A measuring device for long-term installation in a bore in a rock formation for detecting gradual changes in bore diameter, especially gradual constriction which might affect the condition of radioactive waste deposited in the bore, utilizes telescoping parts under outward spring pressure.  One of the two elements of the transducer which by the relative displacement of these elements measures changes in diameter, is a rod held in a friction mounting on one of the telescoping parts that maintains the position of the device in the bore.  The other element of the transducer is fixed on the other telescoping part which also carries limit stops, which in corporation with a stop on the rod confines the lengthwise movement of the rod to a stroke equal to the maximum measuring range of the transducer.  For measuring gradual constriction, the transducer is automatically set to begin with the maximum measur-eable diameter.  Remote control setting of the initial position of the rod is necessary if both enlargement and constriction with time are to be measured.
Patent CA-1242860-A (CA)
Title: Process for making cast thermoplastic film with integral closures
Inventor: BEHR RAYMOND D
IPC: B29C48/30
Filed: 1985-02-19
Granted: 1988-10-11
Abstract: ABSTRACT OF THE INVENTION An improved cast process and apparatus for fusing closure elements, particularly those with thickened bases, to separately extruded film or sheet stock for making containers with integral reclosable closures. The process is applicable to webs of film which contain more than one pair of closure elements. The web is split immediately adjacent the die exit between adjacent pairs of closure elements to achieve a film having essentially erect closure elements and associated ribs should they be included. The process also permits beaded edges along both sides of the film. Improved containers can thus be produced.
Patent CA-1247593-A (CA)
Inventor: SEYMOUR SHAUN A
IPC: B01F13/00
Filed: 1985-02-20
Granted: 1988-12-28
Abstract: AGRICULTURAL FEED BLENDING APPARATUS   ABSTRACT OF THE DISCLOSURE An agricultural feed mixing and blending machine including a plurality of bins for different feed materials, variable speed metering augers in the bottoms of each bin to feed individual materials respectively to a confluence and mixing auger beneath the bins and operable to transfer the mixed material to a grinding unit, the confluence auger being operable when the metering augers are idle, to feed individual materials from an inlet hopper to an elevating auger and an upper transfer auger to deliver different materials respectively to the bins, the upper transfer auger also being reversible to deliver mixed material to the grinding unit, and a discharge auger being operable to receive mixed material and discharge it from the machine.        The present invention primarily is concerned with the inclusion of a container for an additive, such as chemicals or medicinal drugs, to the discharge mechanism for the mixed material for blending the additive in a controlled manner.  When feeding of the additive is stopped, the discharge mechanism purges the additive by feeding sufficient mixed feed material through the discharge mechanism to insure no residue of the additive therein.